6613655 has 4 divisors (see below), whose sum is σ = 7936392. Its totient is φ = 5290920.

The previous prime is 6613631. The next prime is 6613753. The reversal of 6613655 is 5563166.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6613655 - 2⁶ = 6613591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661361 + ... + 661370.

It is an arithmetic number, because the mean of its divisors is an integer number (1984098).

Almost surely, 2^6613655 is an apocalyptic number.

6613655 is a deficient number, since it is larger than the sum of its proper divisors (1322737).

6613655 is a wasteful number, since it uses less digits than its factorization.

6613655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322736.

The product of its digits is 16200, while the sum is 32.

The square root of 6613655 is about 2571.7027433201. The cubic root of 6613655 is about 187.7070187539.

The spelling of 6613655 in words is "six million, six hundred thirteen thousand, six hundred fifty-five".